Description
Product Specifications
| Property | Specification |
|---|---|
| Chemical Name | Sodium Metabisulphite |
| Chemical Formula | Na₂S₂O₅ |
| CAS Number | 7681-57-4 |
| Appearance | White to off-white crystalline powder |
| Molecular Weight | 190.10 g/mol |
| Purity | ≥ 96% (Industrial Grade) |
| Solubility | Highly soluble in water |
| pH | 4.0–5.5 (aqueous solution) |
| Density | ~1.48 g/cm³ |
| Packaging | 25 kg bags or drums |
| Storage | Store in a cool, dry, well-ventilated area in tightly sealed containers away from moisture, acids, and oxidizing agents. |
Uses
Sodium Metabisulphite is widely used across multiple industries, including:
- Dechlorination of potable water and wastewater systems.
- Oxygen scavenger in industrial water treatment and boiler systems.
- Mining industry for gold processing and flotation control.
- Food and beverage preservation (food-grade only).
- Pharmaceutical and chemical synthesis applications.
- Textile bleaching and dyeing processes.
- Photographic processing and film development.
- Leather processing and tanning operations.
- Industrial cleaning and reducing agent in chemical processes.
- Antioxidant in various controlled manufacturing systems.
Benefits
- Highly effective chlorine and oxygen neutralizing agent.
- Strong reducing properties for industrial chemical processes.
- Improves stability and shelf life of treated products (food-grade use).
- Cost-effective solution for water treatment and dechlorination.
- Reliable performance in mining and chemical applications.
- Easy to dissolve and apply in aqueous systems.
- Versatile use across multiple industrial sectors.
- Helps prevent oxidation and corrosion in systems.
- Supports compliance with environmental discharge requirements.
- Widely available and trusted industrial chemical.
Safety Information
- Releases sulfur dioxide gas when in contact with acids.
- Wear appropriate PPE including gloves, goggles, and protective clothing.
- Avoid inhalation of dust and fumes.
- Use only in well-ventilated areas or with proper ventilation systems.
- Store in tightly sealed containers away from moisture, acids, and oxidizing agents.
- Do not mix with acids as hazardous gas may be released.
- In case of eye contact, rinse immediately with plenty of water and seek medical attention.
- In case of skin contact, wash thoroughly with soap and water.
- If inhaled, move to fresh air immediately and seek medical attention if symptoms occur.
- Always consult the latest Safety Data Sheet (SDS) before handling, storage, or transport.

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